Laboratory Rabbit Welfare: Refinement in Research Settings

Rabbits are among the most widely used animals in biomedical and safety testing research, and their unique physiology and behavioral needs require specific welfare refinements to minimize suffering.

Key Facts

Approximately 300,000 rabbits are used in research annually in the US and over 200,000 in the EU.
Rabbits are used for antibody production, safety testing of pharmaceuticals and cosmetics, and models of cardiovascular and eye diseases.
The Draize eye test, which applies substances directly to rabbits' eyes without anesthetic, remains in use despite validated non-animal alternatives for many applications.
Rabbits are obligate nasal breathers and highly stress-responsive — standard laboratory housing and handling practices often fail to account for these needs.
Pair housing of rabbits significantly reduces stress indicators compared to single housing, but adoption is limited by biosecurity concerns and facility design.
The Three Rs framework (Replace, Reduce, Refine) provides the ethical foundation for laboratory animal welfare, but implementation is inconsistent across institutions.

Welfare Considerations

Rabbits present particular welfare challenges in laboratory settings because their stress responses are often silent — unlike rodents, they rarely vocalize distress, and their stoic nature can mask significant suffering. Rabbits in social isolation show elevated cortisol, reduced immune function, and behavioral abnormalities that welfare scientists recognize as indicators of chronic stress. Refinement of rabbit research welfare requires species-specific housing standards (hiding areas, elevated platforms, environmental complexity), appropriate pair or group housing where feasible, training for low-stress handling, and systematic assessment of pain and distress using validated indicators. The existence of validated non-animal alternatives for several major rabbit-dependent test types makes replacement a realistic goal for an increasing proportion of current rabbit use.

What You Can Do

Support organizations like the Humane Society International that advocate for the replacement of the Draize eye test with validated alternatives.
Advocate for mandatory implementation of the Three Rs in all publicly funded research through regulatory engagement.
Support the development and validation of non-animal testing methods through research funding advocacy.
Encourage institutions to adopt pair housing for rabbits by sharing welfare evidence with laboratory animal veterinarians.
Avoid cosmetics and personal care products tested on animals — choose brands certified by Leaping Bunny or PETA's cruelty-free list.